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							<p id="leftBarText"><strong>Did you know?</strong><br/>
								The astronomer Nicolaus Copernicus was the first scientist who realized that Earth moves round the sun.</p>
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					    			<h1>Seasons</h1>
					    	
									<p><strong>Why are there 24 hours in a day ?</strong>					    			
									<img class="m2-image" src="images/day-night.png" width="250px" alt="Day and Night Image" title="Day and Night Image"/> 
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									<p>The length of a day is effected by the rotation of the Earth on its axis. The Earth spins around once on its axis every 24 hours.
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									<p class="topichead"><strong>➢Earth Axis:</strong></p>	
									<p>•	An axis is tilted 23 degrees with respect to Earth's orbit. 
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									 •	Earth Axis is a fallacious line that goes through the center of the Earth 
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									 •	The Earth tilted and rotation around the sun four seasons happen which are spring, summer, autumn, and winter.
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									<p>The Earth is tilted at about 23.4 degrees. This tilting of the Earth gives rise to the fact that there are countries that are not reached by the sunlight every day. 
									Moreover, the day in some places are shorter than the others. In addition, as the Earth spins, centrifugal force is released. 
									This force is the reason that the Earth is oblate spheroid and not a perfect sphere. Oblate spheroid means that the circle is flat at its poles with bulging areas at the center or its equator 
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									 <img class="m-image" src= "images/day-night2.jpg"width="270px"  alt="Day and Night Image 2" title="seasons diagram "/> 
									 
									<p class="topichead"><strong>➢ Seasons:</strong></p> 
									<p>Seasons are caused by the 23.5 degree tilt of Earth's axis of rotation and Earth's yearly revolution around the Sun . 
									This results in one part of the Earth being more directly exposed to rays from the Sun than the other part. 
									The part tilted away from the Sun experiences a cool season, while the part tilted toward the Sun experiences a warm season. 
									Seasons change as the Earth continues its revolution, causing the hemisphere tilted away from or towards the Sun to change accordingly. 
									When it is winter in the Northern hemisphere, it is summer in the Southern hemisphere, and vice versa 
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								<p>The length of the day is affected by the rotation of the Earth. The Earth spins on its axis every 24 hours.  It takes a whole year for the Earth to travel around the sun. 
								Seasons result from the Earth’s yearly revolution around the Earth. The four seasons are spring, summer, autumn and winter. 
								These. Different seasons affect the weather, ecology and daylight on Earth..</p>
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